electricity unit Flashcards
rubbing objects together can cause electrons to move from one object to the other, causing both objects to become…
electrically charged
What does it mean to ground an object?
Grounding is the process of directing a charged object to the earth’s surface with a wire.
electrical charge is…
the movement of electrons
(same as electricity)
The charges are static because….
they remain fixed until they are given a path to leave
Electron affinity
the tendency of a substance to hold on to electrons
When electrons jump from one object to another those objects become…
Charged
define and provide examples:
A) CONDUCTOR-
B) INSULATOR-
A: Material that lets electrons move freely
EX-Copper, Seawater, Alumnium
B: Material that resists or blocks the movement of electrons
EX-wood,glass,rubber
An electrical circuit is made up of 4 parts:
- conducting wires
- energy source
3.switch
4.Load
Explain how lightning is an example of electrical discharge.
Lightning is electrical build-up being transferred very QUICKLY
what does an electroscope detect?
whether an object has been charged
3 laws of attraction
-opposite charges attract each other
-like charges repel each other
-neutral objects will attract charged objects
What is current electricity
Electricity that flows through a circuit or a pathway
objects that have more protons than electrons are….
positively charged
objects that have more electrons than protons are….
negatively charged
what is an electrical discharge
Electrical discharge happens when electrical charges transfer very quickly.
